Recommended tool for a stripped hex head

[Henn28]

Thanks in advance for any advice and recommendations. The first hex head bolt on the front ball joints (tension strut at carrier) I went to loosen when putting the new tension struts on immediately rounded out. Some of it may be my hex socket, but the hex head too looks goobered up now. Fortunately I didn’t really need them and was just doing them because I had a new set on hand, I was in there, and the rest of my front suspension had aged prematurely and was knocking at low speed, so I was throwing parts at it.

Someday they will need to come out though. Any tools work better than others for getting these fasters out? It’s beyond me why BMW didnt use standard bolts. Even the otherwise crappy torx head bolts they love would be better than hex heads.